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twtfnyy: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2015-09-26 14:47:50
twtfnyy: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2015-09-26 14:47:50
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»ù´¡ÓÍ ÖÐÌí¼Ó Õ³¶ÈÖ¸Êý¸Ä½ø¼Á »á¸Ä±ä Èó»¬Ó굀 ³ÉÄ¤ÌØÐÔ£¬±¾ÎÄ »ùÓÚ Ãݺ¯Êý·ÇÅ£¶ÙÁ÷Ìå ÐÞÕýCarreau-YasudaÁ÷±äÄ£ÐÍ ºÍ WLFճѹΠ¹ØÏµÊ½£¬¶Ô µ¯Á÷Ïß ½Ó´¥Èó»¬ ÎÊÌâ ½øÐÐÁË ÍêÈ«ÊýÖµ·ÖÎö¡£Ñо¿±íÃ÷£¬±È½Ï »ù´¡ÓÍ Ìí¼ÓÈýÖÖ ²»Í¬µÄ Õ³¶ÈÖ¸Êý ¸Ä½ø¼Á£¬Æä ¼ôÇÐÏ¡»¯ÌØÐÔ¡¢ÓÍĤºñ¶È ºÍ ѹÁ¦·Ö²¼ ¾ù²»Ïàͬ¡£ Adding viscosity index improver in base oil will change the film forming characteristic of lubricating oil. This paper, based on the relation between pressure-viscosity temperature and Carreau-Yasuda rheological model of power-function non-newtonian fluid, presented complete numerical analysis of streamline contact lubrication. The research results show that there are differences among base oils with addition of three different viscoity index improvers in terms of shear thinning characteristic, oil film thickness and pressure distribution ¹Ø¼ü×Ö£º·ÇÅ£¶ÙÁ÷Ì壻ճ¶ÈÖ¸Êý¸Ä½ø¼Á£»Carreau-YasudaÁ÷±äÄ£ÐÍ£»¼ôÇÐÏ¡»¯ Keywords:Non-Newtonian Fluid;Viscosity Index Improver; Carreau-Yasuda Rheological Model;Shear Thinning |
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